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Physics > Waves > Flashcards

Waves Flashcards

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1
Q

What is a longitudinal wave?

A

Vibrations are along the same direction as the wave transfers energy

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2
Q

What is a transverse wave?

A

The vibrations are at 90 degrees to the direction energy is transferred by the wave

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3
Q

What is the definition of wavelength?

A

Distance from one peak to the next

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4
Q

What is the definition of frequency?

A

How many complete waves there are per second passing a second point

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5
Q

What is the definition of amplitude?

A

Height of the wave from rest to crest

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6
Q

What is the definition of speed?

A

How fast the wave goes

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7
Q

What is the definition of period?

A

Time it takes in seconds for one complete wave to pass point

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8
Q

What do waves transfer?

A

Energy and information without transferring matter

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9
Q

What is the formula for wave speed?

A

Frequency * wavelength

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10
Q

What is the formula for frequency?

A

1/ time period

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11
Q

What are the 7 parts of the EM spectrum?

A

1) Radio waves
2) Micro-waves
3) Infrared
4) Visible light
5) Ultra-violet
6) X-rays
7) Gamma rays

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12
Q

What happens to wavelength and frequency as you go down the EM spectrum?

A

Frequency increases
Wavelength decreases

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13
Q

What can microwaves do to the human body?

A

Heat the body tissue

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14
Q

What can infrared ways do to the body?

A

Skin burns

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15
Q

What can ultraviolet rays do to the body?

A

Damage to surface cells and blindness

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16
Q

What can gamma rays do to the body?

A

Cancer and mutation

17
Q

What type of wave is a light wave?

A

Transverse

18
Q

What is the formula for refractive index?

A

Sin(i) / sin(r)

19
Q

What is the definition of the critical angle?

A

Anything above the critical angle will lad to total internal reflection

20
Q

What is the formula for the critical angle?

A

Sin(c) = 1/n

21
Q

What type of wave are sound waves?

A

Longitudinal

22
Q

What is the frequency for human hearing?

A

20-20000 Hz

23
Q
A

Physics (8 decks)

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